CN103982472A - Loading isolation type oil liquid integration power system - Google Patents
Loading isolation type oil liquid integration power system Download PDFInfo
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- CN103982472A CN103982472A CN201410228813.6A CN201410228813A CN103982472A CN 103982472 A CN103982472 A CN 103982472A CN 201410228813 A CN201410228813 A CN 201410228813A CN 103982472 A CN103982472 A CN 103982472A
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Abstract
The invention belongs to the technical field of power equipment, and relates to a loading isolation type oil liquid integration power system. The loading isolation type oil liquid integration power system is characterized in that a controller is electrically connected with each component, an internal combustion engine is a single planet rank, the single planet rank is connected with a machinery energy feedback system, one end of a hydraulic pump is connected with the single planet rank, the other end of the hydraulic pump is connected with a hydraulic transformer, an external energy charging interface is connected with the hydraulic transformer, a first direction control valve is respectively connected with the hydraulic pump, the hydraulic transformer, a first energy accumulator group and a second energy accumulator group, a second direction control valve is respectively connected with the first energy accumulator group, the second energy accumulator group and a hydraulic power regulation distributor, a first pressure detection sensor is manufactured on the first energy accumulator group in connection mode, and a second pressure detection sensor is manufactured on the second energy accumulator group in connection mode. The loading isolation type oil liquid integration power system is simple in structure, scientific in theory, low in cost, environmentally friendly, low in energy consumption, high in work efficiency, and high in energy recovery utilization efficiency.
Description
Technical field:
The invention belongs to power equipment technical field, relate to a kind of load isolation formula fluid integrated power system, can be widely used in the hydraulic power such as engineering machinery and various hydraulic drive vehicles demand occasion.
Background technique:
Internal combustion engine drive hydraulic power system is widely used in motor vehicle and engineering machinery, and while adopting this power source of internal combustion engine drive hydraulic power system, the pressure of oil hydraulic pump and flow must adapt to the variation of load, thereby have a strong impact on the operating mode of internal-combustion engine; Meanwhile, because application machine load variations scope is large, power demand is inhomogeneous, causes the rated power of the internal-combustion engine of matching large; In addition, some application machine is such as Brake Energy in excavator periodic duty (hydraulic energy, mechanical energy) can not be recycled, waste very serious, thereby cause existing internal combustion engine drive hydraulic power system fuel consume higher, the general problem such as on the low side of working efficiency.Therefore, seek to design a kind of brand-new load isolation formula fluid integrated power system, make internal-combustion engine and load system work isolation, make internal combustion engine in optimum condition, effectively recycling regenerating braking energy, realizes energy-saving and emission-reduction.
Summary of the invention:
The object of the invention is to overcome the shortcoming that prior art exists, seek design a kind of load isolation formula fluid integrated power system as fluid pressure drive device hydraulic power supply is provided, make internal-combustion engine and load system work isolation, realize internal combustion engine in optimum condition, effectively recycling hydraulic pressure or mechanical regenerative braking energy, also can fill energy by ground pump station, realize energy-saving and emission-reduction.
To achieve these goals, agent structure of the present invention comprises that internal-combustion engine, single planetary row, mechanical energy feedback system, oil hydraulic pump, hydraulic transformer, first direction control valve, the first Accumulator arrangements, the second Accumulator arrangements, the first press detection sensor, the second press detection sensor, controller, second direction control valve, hydraulic power regulate and distribute device and energy interface is filled in outside; Controller is connected with other each parts telecommunications breaths respectively, internal-combustion engine is connected with single planetary row, and single planetary row is connected with mechanical energy feedback system, and one end of oil hydraulic pump is connected with single planetary row, the other end is connected with hydraulic transformer, is connected with outside and fills energy interface on hydraulic transformer; First direction control valve is connected with oil hydraulic pump, hydraulic transformer, the first Accumulator arrangements and the second Accumulator arrangements respectively; Second direction control valve regulates and distributes device with the first Accumulator arrangements, the second Accumulator arrangements and hydraulic power respectively and is connected; On the first Accumulator arrangements, connect and be shaped with the first press detection sensor, on the second Accumulator arrangements, connect and be shaped with the second press detection sensor, the first press detection sensor and the second press detection sensor detect respectively pressure signal and the load signal of the first Accumulator arrangements and the second Accumulator arrangements, controller is processed pressure signal and the load signal that the first press detection sensor and the second press detection sensor detect, and send control signal to internal-combustion engine and other each parts, control stored energy or the release of the first Accumulator arrangements and the second Accumulator arrangements; Internal-combustion engine drives oil hydraulic pump to fill energy to the first Accumulator arrangements and the second Accumulator arrangements by single planetary row, or is filled and can be filled energy to the first Accumulator arrangements and the second Accumulator arrangements by the hydraulic pressure of external ground pump station or the generation of hydraulic regenerative braking energy-recuperation system by interface by outside; The independent outwards output hydraulic pressure power of the first Accumulator arrangements and the second Accumulator arrangements does work to load system, the process of output hydraulic pressure power is exactly the process that the first Accumulator arrangements and the second Accumulator arrangements release energy, system dynamic performance depends on the Energy Release of the first Accumulator arrangements and the second Accumulator arrangements, the process that releases energy and loading demand adapt, and regulate and distribute device realize mating of power output and bearing power by hydraulic power; Internal-combustion engine to the first Accumulator arrangements and the second Accumulator arrangements fill can time isolate with external load system work, its work is not subject to load effect, the constant optimum condition that is operated in, realizes significantly energy-saving and emission-reduction; The energy process that charges and discharge of the first Accumulator arrangements and the second Accumulator arrangements hockets, and internal-combustion engine only fills the first Accumulator arrangements or the second Accumulator arrangements work of energy for needs, and internal-combustion engine is according to the average load power apolegamy of external load.
The present invention compared with prior art, internal-combustion engine and load isolation, and select internal-combustion engine according to average load power, the internal-combustion engine rated power matching with load system reduces greatly; Internal-combustion engine fills the constant optimum condition that is operated in of energy process to accumulator, realizes significantly energy-saving and emission-reduction; System is machinery or the hydraulic energy of the generation of recycling load system regenerative braking directly, further improves the capacity usage ratio of system; System also can utilize outside pumping plant to fill energy, reduces discharge; It is simple in structure, principle science, and cost is low, environmental friendliness, less energy consumption, working efficiency is high, and it is high that energy is recycled efficiency.
Brief description of the drawings:
Fig. 1 is agent structure principle schematic of the present invention.
Fig. 2 is the principle sketch of the present invention as the full hydraulic excavator of hydraulic power supply, wherein 12 is load isolation formula fluid integrated power system, 13 is full hydraulic excavator hydraulic braking sytem, and 14 is full hydraulic excavator hydraulic system, and 15 is full hydraulic excavator mechanical braking sytem.
Embodiment:
Below by embodiment, also the invention will be further described by reference to the accompanying drawings.
Embodiment 1:
The agent structure of the present embodiment comprises that internal-combustion engine 1, single planetary row 2, mechanical energy feedback system 3, oil hydraulic pump 4, hydraulic transformer 5, first direction control valve 6, the first Accumulator arrangements 7A, the second Accumulator arrangements 7B, the first press detection sensor 8A, the second press detection sensor 8B, controller 9, second direction control valve 10, hydraulic power regulate and distribute device 11 and energy interface 12 is filled in outside, controller 9 is connected with other each parts telecommunications breaths respectively, internal-combustion engine 1 is connected with single planetary row 2, and single planetary row 2 is connected with mechanical energy feedback system 3, and one end of oil hydraulic pump 4 is connected with single planetary row 2, the other end is connected with hydraulic transformer 5, is connected with outside and fills energy interface 12 on hydraulic transformer 5, first direction control valve 6 is connected with oil hydraulic pump 4, hydraulic transformer 5, the first Accumulator arrangements 7A and the second Accumulator arrangements 7B respectively, second direction control valve 10 regulates and distributes device 11 with the first Accumulator arrangements 7A, the second Accumulator arrangements 7B and hydraulic power respectively and is connected, upper connection of the first Accumulator arrangements 7A is shaped with the first press detection sensor 8A, upper connection of the second Accumulator arrangements 7B is shaped with the second press detection sensor 8B, the first press detection sensor 8A and the second press detection sensor 8B detect respectively pressure signal and the load signal of the first Accumulator arrangements 7A and the second Accumulator arrangements 7B, controller 9 is processed pressure signal and the load signal that the first press detection sensor 8A and the second press detection sensor 8B detect, and send control signal to internal-combustion engine 1 and other each parts, control stored energy or the release of the first Accumulator arrangements 7A and the second Accumulator arrangements 7B, internal-combustion engine 1 drives oil hydraulic pump 3 to fill energy to the first Accumulator arrangements 7A and the second Accumulator arrangements 7B by single planetary row 2, or is filled and can be filled energy to the first Accumulator arrangements 7A and the second Accumulator arrangements 7B by the hydraulic pressure of external ground pump station or the generation of hydraulic regenerative braking energy-recuperation system by interface 12 by outside, the first Accumulator arrangements 7A and the second Accumulator arrangements 7B are independent, and outwards output hydraulic pressure power does work to load system, the process of output hydraulic pressure power is exactly the process that the first Accumulator arrangements 7A and the second Accumulator arrangements 7B release energy, system dynamic performance depends on the Energy Release of the first Accumulator arrangements 7A and the second Accumulator arrangements 7B, the process that releases energy and loading demand adapt, and regulate and distribute device 12 realize mating of power output and bearing power by hydraulic power, internal-combustion engine 1 to the first Accumulator arrangements 7A and the second Accumulator arrangements 7B fill can time isolate with external load system work, its work is not subject to load effect, the constant optimum condition that is operated in, realizes significantly energy-saving and emission-reduction, the energy process that charges and discharge of the first Accumulator arrangements 7A and the second Accumulator arrangements 7B hockets, and internal-combustion engine 1 only fills the first Accumulator arrangements 7A or the second Accumulator arrangements 7B work of energy for needs, and internal-combustion engine 1 is according to the average load power apolegamy of external load.
The specific implementation process of the present embodiment is: controller 9 is responsible for processing each Accumulator arrangements pressure signal and the load signal of the first press detection sensor 8A and the second press detection sensor 8B detection, and send control signal to internal-combustion engine 1 and each element, control stored energy or the release of the first Accumulator arrangements 7A and the second Accumulator arrangements 7B, Accumulator arrangements or be made as many groups; Generally comprise following operating mode:
(1), Accumulator arrangements fills energy: the first Accumulator arrangements 7A and the second Accumulator arrangements 7B hocket and fill energy, externally the Accumulator arrangements of acting can not fill energy simultaneously, when the second Accumulator arrangements 7B fills energy, first direction control valve 6 is in the next, second direction control valve 10 is in upper, internal-combustion engine 1 is connected with the sun gear of single planetary row 2, oil hydraulic pump 4 is connected with the planet carrier of single planetary row 2, the gear ring of single planetary row 2 is fixed, internal-combustion engine 1 drives oil hydraulic pump 4, controller 9 controlling combustion engines 1 keep constant power output, and the constant optimum condition that is operated in; Analyze the pressure signal of the second Accumulator arrangements 7B of the second press detection sensor 8B detection with Time Controller 9, and control the discharge capacity of oil hydraulic pump 4, make the output power of internal-combustion engine 1 and fill energy power match; In the time that the parameter value (as pressure) of the second Accumulator arrangements 7B reaches capping, controller 9 sends control signal and closes internal-combustion engine 1, stops accumulation of energy; The first Accumulator arrangements 7A fill can principle and the second Accumulator arrangements 7B identical;
(2), Accumulator arrangements externally does work: the first Accumulator arrangements 7A and the second Accumulator arrangements 7B alternately externally do work after being full of energy, in filling the Accumulator arrangements externally acting simultaneously of energy state; When the first Accumulator arrangements 7A externally does work, first direction control valve 6 is in the next, second direction control valve 10 is in upper, controller 9 is analyzed the pressure signal of the first Accumulator arrangements 7A of load signal and the first press detection sensor 8A detection, control the output flow that hydraulic power regulates and distributes device 11, realize take-off output and mate with bearing power; The principle that the second Accumulator arrangements 7B externally does work is identical with the first Accumulator arrangements 7A;
(3), mechanical regenerative braking energy reclaims: the first Accumulator arrangements 7A or the second Accumulator arrangements 7B are in the time filling energy state, removing the gear ring of single planetary row 2 fixes, mechanical energy feedback system 3 is connected with the gear ring of single planetary row 2, mechanical regenerative braking energy drives planet carrier by the gear ring of single planetary row 2, internal-combustion engine 1 drives the planet carrier of single planetary row 2 by the sun gear of single planetary row 2 simultaneously, the planet carrier of single planetary row 2 drives oil hydraulic pump 4, realizes mechanical regenerative braking energy and internal-combustion engine 1 jointly for Accumulator arrangements fills energy;
(4), the recovery of hydraulic regenerative braking energy or outside pumping plant fill energy: the first Accumulator arrangements 7A or the second Accumulator arrangements 7B are in the time filling energy state, hydraulic regenerative braking energy accesses outside by pipeline and fills energy interface 12, rear jointly for Accumulator arrangements fills energy by the liquid stream interflow of pumping with oil hydraulic pump 4 after hydraulic transformer 5 transformations; When outside pumping plant fills energy, close internal-combustion engine 1, outside pumping plant accesses outside by pipeline and fills energy interface 12, be separately that the first Accumulator arrangements 7A or the second Accumulator arrangements 7B fill energy, now, the speed of the first Accumulator arrangements 7A or the second Accumulator arrangements 7B storage hydraulic energy depends on power and the pressure of outside pumping plant oil hydraulic pump, adopts the hydraulic power unit realization of high-power to fill fast energy.
Embodiment 2:
The present embodiment is applied on full hydraulic excavator embodiment 1 as hydraulic power supply, as shown in Figure 2, mainly comprise load isolation formula fluid integrated power system 12, full hydraulic excavator hydraulic braking sytem 13, full hydraulic excavator hydraulic system 14 and full hydraulic excavator mechanical braking sytem 15; Its working principle is: the hydraulic power output interface of load isolation formula fluid integrated power system 12 is connected with full hydraulic excavator hydraulic system 14 by pipeline, for full hydraulic excavator provides hydraulic power, full hydraulic excavator hydraulic braking sytem 13 is filled and can be connected by interface by pipeline and the outside of load isolation formula fluid integrated power system 12, recycling hydraulic braking energy, full hydraulic excavator mechanical braking sytem 15 is connected with the mechanical energy feedback system of load isolation formula fluid integrated power system 12 by transmission shaft, recycling mechanical braking energy.
Claims (1)
1. a load isolation formula fluid integrated power system, is characterized in that agent structure comprises that internal-combustion engine, single planetary row, mechanical energy feedback system, oil hydraulic pump, hydraulic transformer, first direction control valve, the first Accumulator arrangements, the second Accumulator arrangements, the first press detection sensor, the second press detection sensor, controller, second direction control valve, hydraulic power regulate and distribute device and energy interface is filled in outside; Controller is connected with other each parts telecommunications breaths respectively, internal-combustion engine is connected with single planetary row, and single planetary row is connected with mechanical energy feedback system, and one end of oil hydraulic pump is connected with single planetary row, the other end is connected with hydraulic transformer, is connected with outside and fills energy interface on hydraulic transformer; First direction control valve is connected with oil hydraulic pump, hydraulic transformer, the first Accumulator arrangements and the second Accumulator arrangements respectively; Second direction control valve regulates and distributes device with the first Accumulator arrangements, the second Accumulator arrangements and hydraulic power respectively and is connected; On the first Accumulator arrangements, connect and be shaped with the first press detection sensor, on the second Accumulator arrangements, connect and be shaped with the second press detection sensor, the first press detection sensor and the second press detection sensor detect respectively pressure signal and the load signal of the first Accumulator arrangements and the second Accumulator arrangements, controller is processed pressure signal and the load signal that the first press detection sensor and the second press detection sensor detect, and send control signal to internal-combustion engine and other each parts, control stored energy or the release of the first Accumulator arrangements and the second Accumulator arrangements; Internal-combustion engine drives oil hydraulic pump to fill energy to the first Accumulator arrangements and the second Accumulator arrangements by single planetary row, or is filled and can be filled energy to the first Accumulator arrangements and the second Accumulator arrangements by the hydraulic pressure of external ground pump station or the generation of hydraulic regenerative braking energy-recuperation system by interface by outside; The independent outwards output hydraulic pressure power of the first Accumulator arrangements and the second Accumulator arrangements does work to load system, the process of output hydraulic pressure power is exactly the process that the first Accumulator arrangements and the second Accumulator arrangements release energy, system dynamic performance depends on the Energy Release of the first Accumulator arrangements and the second Accumulator arrangements, the process that releases energy and loading demand adapt, and regulate and distribute device realize mating of power output and bearing power by hydraulic power; Internal-combustion engine to the first Accumulator arrangements and the second Accumulator arrangements fill can time isolate with external load system work, its work is not subject to load effect, the constant optimum condition that is operated in, realizes significantly energy-saving and emission-reduction; The energy process that charges and discharge of the first Accumulator arrangements and the second Accumulator arrangements hockets, and internal-combustion engine only fills the first Accumulator arrangements or the second Accumulator arrangements work of energy for needs, and internal-combustion engine is according to the average load power apolegamy of external load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228813.6A CN103982472B (en) | 2014-05-28 | 2014-05-28 | A kind of load isolation formula fluid integrated power system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410228813.6A CN103982472B (en) | 2014-05-28 | 2014-05-28 | A kind of load isolation formula fluid integrated power system |
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| Publication Number | Publication Date |
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| CN103982472A true CN103982472A (en) | 2014-08-13 |
| CN103982472B CN103982472B (en) | 2016-01-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419622A (en) * | 2022-09-22 | 2022-12-02 | 华侨大学 | Electro-hydraulic compound drive engineering machinery rotation system and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064694A (en) * | 1975-11-06 | 1977-12-27 | Regie Nationale Des Usines Renault | Charging an accumulator by a heat engine |
| US4215545A (en) * | 1978-04-20 | 1980-08-05 | Centro Ricerche Fiat S.P.A. | Hydraulic system for transmitting power from an internal combustion engine to the wheels of a motor vehicle |
| CN1323956A (en) * | 2001-07-13 | 2001-11-28 | 陈荣明 | Power-saving energy-accumulating hydraulic power system |
| CN103650283A (en) * | 2011-07-08 | 2014-03-19 | 西门子公司 | Energy storage arrangement and alternating load consumer |
| CN103775595A (en) * | 2014-02-20 | 2014-05-07 | 青岛大学 | Regenerative braking stepless transmission for vehicles |
-
2014
- 2014-05-28 CN CN201410228813.6A patent/CN103982472B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064694A (en) * | 1975-11-06 | 1977-12-27 | Regie Nationale Des Usines Renault | Charging an accumulator by a heat engine |
| US4215545A (en) * | 1978-04-20 | 1980-08-05 | Centro Ricerche Fiat S.P.A. | Hydraulic system for transmitting power from an internal combustion engine to the wheels of a motor vehicle |
| CN1323956A (en) * | 2001-07-13 | 2001-11-28 | 陈荣明 | Power-saving energy-accumulating hydraulic power system |
| CN103650283A (en) * | 2011-07-08 | 2014-03-19 | 西门子公司 | Energy storage arrangement and alternating load consumer |
| CN103775595A (en) * | 2014-02-20 | 2014-05-07 | 青岛大学 | Regenerative braking stepless transmission for vehicles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419622A (en) * | 2022-09-22 | 2022-12-02 | 华侨大学 | Electro-hydraulic compound drive engineering machinery rotation system and control method |
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| CN103982472B (en) | 2016-01-27 |
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Granted publication date: 20160127 Termination date: 20170528 |